Basic Calculator

Simple and professional calculator for basic arithmetic operations

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How to Use the Basic Calculator

Our basic calculator provides all essential arithmetic functions with an intuitive interface and memory capabilities:

🔢 Basic Operations

Perform addition (+), subtraction (−), multiplication (×), and division (÷) with ease. Simply click the numbers and operators to build your calculation, then press equals (=) to get the result.

🧠 Memory Functions

MS (Memory Store): Store the current display value in memory
MR (Memory Recall): Recall the value from memory
M+ (Memory Add): Add current display to memory
M- (Memory Subtract): Subtract current display from memory
MC (Memory Clear): Clear the memory

🎯 Clear Functions

AC (All Clear): Clear everything including memory and history
CE (Clear Entry): Clear only the current entry
⌫ (Backspace): Delete the last entered digit

💡 Pro Tips

• Use keyboard input for faster calculations
• The display shows calculation history above the main result
• Memory value is displayed at the top for easy reference
• All calculations support decimal numbers with high precision

Frequently Asked Questions

Can I use keyboard input for calculations?
Yes! You can use your keyboard for input. Numbers 0-9, operators (+, -, *, /), decimal point (.), Enter for equals, and Escape for clear all are all supported.
How accurate are the calculations?
Our calculator uses JavaScript's built-in math functions with high precision. Results are accurate to 15-16 decimal places, which is suitable for most practical calculations.
What's the difference between AC and CE?
AC (All Clear) resets everything including the display, memory, and calculation history. CE (Clear Entry) only clears the current number being entered, preserving any ongoing calculation.
How do the memory functions work?
Memory functions let you store numbers for later use. MS stores the current display, MR recalls it, M+ adds to memory, M- subtracts from memory, and MC clears memory completely.
Can I see my calculation history?
Yes! The calculator displays your current calculation above the main result screen, showing the complete expression before you press equals.